Cure8 research brief
People with PsD or IBD — or both — may develop the other condition years later, and the order of diagnoses appears linked to timing of the second disease and to differences in mortality for some groups. That could affect monitoring and coordination of care for patients with multiple immune-mediated diseases.
Clinicians who treat psoriatic disease or IBD, researchers studying co-occurring immune-mediated diseases, and patients with PsD or IBD concerned about additional autoimmune conditions.
The researchers used administrative health data from Newfoundland and Labrador (2009–2019) to identify patients with PsD and IBD by ICD-9 codes, then compared groups who developed PsD first versus IBD first. About two-thirds of people with both conditions had IBD diagnosed before PsD.
When Crohn’s disease preceded PsD, PsD tended to appear sooner than when PsD preceded Crohn’s; similar timing patterns were seen with ulcerative colitis though statistical significance varied. Age at death differed notably when UC preceded PsD versus the reverse. Hospitalization costs did not differ significantly between groups.
The study highlights that the sequence of immune-mediated diseases may relate to prognosis and timing of subsequent diagnoses. It does not test interventions or explain biological mechanisms, and cannot prove causation because it is observational administrative-data research.
This is a retrospective, administrative-database study using ICD-9 diagnostic codes from one regional health system (Newfoundland and Labrador) and reports associations, not causal relationships. The article provides an abstract-level summary; full methods and limitations are in the journal publication.
Review the original publication for the complete reporting, methods, and context.
This Cure8 brief is based on source text from the linked article. Cure8 is informational only and is not a substitute for professional medical advice, diagnosis, or treatment.
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